I got the script to work by saving it to ~/Library/Application Support/LaunchBar/Actions/omnifocus-project.applescript.
I also added a task for myself to learn applescript. I've been on a mac 5+ years, program in many languages, but know nothing about applescript.
I also added a task for myself to learn applescript. I've been on a mac 5+ years, program in many languages, but know nothing about applescript.